### Abstract

Adiabatic time evolution of degenerate eigenstates of a quantum system provides a means for controlling electronic states since mixing between degenerate states generates a matrix Berry phase. In the presence of spin-orbit coupling in n -type semiconductor quantum dots, the electron Hamiltonian is invariant under time reversal operation and the many body ground state may be doubly degenerate. This double degeneracy can generate non-Abelian vector potentials when odd number of electrons are present. We find that the antisymmetry of many-electron wave function has no effect on the matrix Berry phase. We have derived equations that allow one to investigate the effect of electron correlations by expressing the non-Abelian vector potentials for many-electron system in terms of single electron non-Abelian vector potentials.

Original language | English |
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Article number | 245328 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 75 |

Issue number | 24 |

DOIs | |

Publication status | Published - 2007 Jun 27 |

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### ASJC Scopus subject areas

- Condensed Matter Physics

### Cite this

**Control of many-electron states in semiconductor quantum dots by non-Abelian vector potentials.** / Yang, Sung Ryul.

Research output: Contribution to journal › Article

}

TY - JOUR

T1 - Control of many-electron states in semiconductor quantum dots by non-Abelian vector potentials

AU - Yang, Sung Ryul

PY - 2007/6/27

Y1 - 2007/6/27

N2 - Adiabatic time evolution of degenerate eigenstates of a quantum system provides a means for controlling electronic states since mixing between degenerate states generates a matrix Berry phase. In the presence of spin-orbit coupling in n -type semiconductor quantum dots, the electron Hamiltonian is invariant under time reversal operation and the many body ground state may be doubly degenerate. This double degeneracy can generate non-Abelian vector potentials when odd number of electrons are present. We find that the antisymmetry of many-electron wave function has no effect on the matrix Berry phase. We have derived equations that allow one to investigate the effect of electron correlations by expressing the non-Abelian vector potentials for many-electron system in terms of single electron non-Abelian vector potentials.

AB - Adiabatic time evolution of degenerate eigenstates of a quantum system provides a means for controlling electronic states since mixing between degenerate states generates a matrix Berry phase. In the presence of spin-orbit coupling in n -type semiconductor quantum dots, the electron Hamiltonian is invariant under time reversal operation and the many body ground state may be doubly degenerate. This double degeneracy can generate non-Abelian vector potentials when odd number of electrons are present. We find that the antisymmetry of many-electron wave function has no effect on the matrix Berry phase. We have derived equations that allow one to investigate the effect of electron correlations by expressing the non-Abelian vector potentials for many-electron system in terms of single electron non-Abelian vector potentials.

UR - http://www.scopus.com/inward/record.url?scp=34347403656&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevB.75.245328

DO - 10.1103/PhysRevB.75.245328

M3 - Article

VL - 75

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 24

M1 - 245328

ER -